Dust exhauster and conveyer for thrashing-machines



(-No ModeL) D. LOGAN.

DUST EXHAUSTER'AND GONVBYER r'on' THRASHING. MACHINES.

Patented Jan. 29,1884.

N. PEI'ERS, PhulWLrlhugnphzr. Washington at;

' 'U'NrTED" STATES PATENT QFFICEg DUST EXHAUSTER AND COANVEYER FOR THRASHINGI-MACHINES.

DAVID LOGAN, OF HAR'ISI OWN, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 292,498, dated January 29, 1884.

Application filed June 7, 1883. (No model.)

' To all whont it may concern of the United States, residing at'Hartstown,

in the county of Crawford and State of Pennsylvania, have invented a 'new and useful 'Dust Exhauster and Gonveyer for Thrashing- Machines, of which the following is a specification, reference being had to the accompanying drawings. I

This invention relates to dust-conveyers for thrashing-machines, separators, and the like, in which a rotary fan exhausts the dust from the machine, and also operates to blow it off in the desired direction.

The object of my invention is to provide a device of this class possessing superior advantages in point of simplicity, inexpensiveness, and general efficiency, whereby all annoyance arising from the dust will be effectually overcome, the grain will be cleaner, any liability of the grain being blown over the tail-board of the machine is obviated, and cleaner straw is secured.

Referring to the drawings, Figure 1 isa perspective view, showing part of the casing of a separator with my invention attached. Fig. 2 is a vertical longitudinal sectional view of the same. Fig. 3 is a vertical transverse sectional View.

Referring to the drawings, A designates the casing of the separator, the rear end of which is closed by a suitably-arranged closet, B, which comprises two doors, 0 O, (to'admit of an inspection or substitution of the riddles,) hinged at their side edges, D, so as to swing open, and provided with an apron, E, under which the straw is carried by a suitable straw carrier or elevator in the usual manner, these doors 0 0- being retained in closed position by a flange,

F, on the extreme edge of the hinged lid or cover G of the closet B, as shown.

On top the casing A is secured a fan-chamber, H, which is preferably formed ci. ilar and with an elliptical cross-section, a fan or blower, I, being arranged in this chamber on a transverse shaft, J, that projects from the side of the casing, and is provided with a pulley, K, by which'motion is transmitted to the fan-shaft from a pulley, L, on the nearest or most desirable shaft M of the separator mechanism by means of a connecting-belt, N.

In the sides of the fan-chamber H, which sides are designated by the letter O, are pro-' vided openings P 'Ponc at'each sidefrom which extend exhaust-pipes Q Q to openings R R in the cover G of the closet B. These pipes or tubes Q Q are formed of elastic material at the ends or portion connecting with the saidcover G; or they may be, andare preferably, formed entirely of elastic material, as herein shown, so that they will permit the cover G to be raised, as shown in dotted lines, Fig. 2 of the drawings, so that the doors 0 O can be opened.

In operation, the dust is exhausted from the closet B through these pipes into the fan-chamber by the suction of the rotary fan, and it is then blown from the fan-chamber through one or the other of the curved pipes S S, that extendone at. each e11dfro1n the bottom of the fan-chamber up and into a horizontal top eonveyer-tube, T, in opposite directions.

The tube T may be of the desired length to carry the dust as far from the'machineas is desirable, and by altering the direction of the revolution of the fan, which .can be accomplished by simply twisting the belt N, the

dust may be blown through either of the pipes S S, and in a corresponding direction from either end of the tube T, according to the direction of the wind.

The operation and advantages of my invention will be readily understood and appreciated. It will be observed that the arrangement of parts in relation to each other is such that the best and most efficient results are obtained; but I do not wish tobe understood as limiting myself to this exact construction and arrangement of parts, as numerous modifica- IOC cap or cover of the closet hinged and formed I In testimony that I claim the foregoing as with the flange that engages the doors to rei my own I have hereto affixed my signature in tain the same closed, a, fan-chamber secured presence of two witnesses.

near the closet, and provided with a rotary fan,

5 the elastic exhaust-tubes extending from open- I) AVID LOG A N.

ings in the sides of the fan-chamber to openings in the hinged cover, and the conveyer- Nitnesses: tubes extending from different ends of the fan J, N. MCCLOSKEY, chamber up and in different directions, as and J. LOGAN.

10 for the purpose set forth. 

